Increased input delay when riding an entity

Riding any entiry (horse, minecart, etc.) increases mouse input delay.

1. Ride some entity
2. Move mouse
3. Mouse movement is delayed

 

It's hard to show on video, but here it is:

https://youtu.be/j_aDcbvvrRM

 

Boats are exception because they are the only entity that aren't using player facing angles to determine thier movement.